.shelf_head {
  width: 94%;
  margin: 0 auto;
  height: 100%;
  display: flex;
  justify-content: space-between;
}

.shelf_head .head_book {
  display: inline-block;
  font-size: 24px;
  line-height: 50px;
}

.shelf_head .head_icon {
  width: 36%;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
